untreated
adjective
un·treat·ed
ˌən-ˈtrē-təd 
: not treated
untreated wastewater
especially
: not improved or controlled medically
an untreated case of pneumonia
untreated diabetic patients
Examples of untreated in a Sentence
untreated wool
Recent Examples on the Web
The air quality was thick and green, with notes of juniper and untreated wood.
—
Fran Tirado, Them., 4 Sep. 2025
Some mental health conditions can cause bouts of anger or aggression toward others and oneself when untreated, Humphreys said.
—Kristen Rogers, CNN Money, 4 Sep. 2025
According to a police affidavit, Eutsey told authorities the child had suffered an untreated burn injury about a week before her death.
—Doc Louallen, ABC News, 4 Sep. 2025
There is now evidence that untreated hearing loss is a leading modifiable risk factor for cognitive decline.
—Joseph Coughlin, Forbes.com, 2 Sep. 2025
See All Example Sentences for untreated
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Fran Tirado, Them., 4 Sep. 2025
Some mental health conditions can cause bouts of anger or aggression toward others and oneself when untreated, Humphreys said.
—Kristen Rogers, CNN Money, 4 Sep. 2025
According to a police affidavit, Eutsey told authorities the child had suffered an untreated burn injury about a week before her death.
—Doc Louallen, ABC News, 4 Sep. 2025
There is now evidence that untreated hearing loss is a leading modifiable risk factor for cognitive decline.
—Joseph Coughlin, Forbes.com, 2 Sep. 2025
See All Example Sentences for untreated
Cite this Entry
“Untreated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/untreated. Accessed 17 Sep. 2025.
Copy CitationMedical Definition
untreated
adjective
un·treat·ed
-ˈtrēt-əd
: not subjected to treatment
an untreated disease
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